Home / 111,706.36-154,155.18-61,405.72

Finding the Fourth Proportional to 111,706.36, 154,155.18 and 61,405.72

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Solution

The fourth proportional to 111,706.36, 154,155.18 and 61,405.72 is: 84,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,706.36 : 154,155.18 = 61,405.72 : x
  2. Step 2: Convert to fraction form
    111,706.36/154,155.18 = 61,405.72/x
  3. Step 3: Cross multiply
    111,706.36x = 154,155.18 × 61,405.72
  4. Step 4: Simplify right side
    111,706.36x = 9,466,009,819.63
  5. Step 5: Solve for x
    x = 9,466,009,819.63/111,706.36
  6. Step 6: Final answer
    x = 84,740.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.